/Engine/Plugins/Runtime/nDisplay/Source/DisplayCluster/Public/Render/Viewport/Containers/DisplayClusterViewport_EnumsICVFX.h
This flag raised only from icvfx manager.
enum EDisplayClusterViewportRuntimeICVFXFlags { None = 0, Target = 1 << 0, InCamera = 1 << 1, Chromakey = 1 << 2, Lightcard = 1 << 3, UVLightcard = 1 << 4, InternalResource = 1 << 5, Unused = 1 << 6, }